Arch Capital Group Ltd
Held by 12 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide G0450A105 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide
In plain English: 12 of the investors we track own this stock. In the latest quarter, 4 of them bought more of it and 7 sold some or all of theirs (1 bought it for the first time). That tells you what they did last quarter — not what the stock will do next.
Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer
Managers holding
12
0 vs last quarter (like-for-like)
Total value held
$2.53B
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.3%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
-$223.31M
-9.7% vs last quarter
Net shares bought
-2.6M
Est. net flow -$247.75M
Quarter activity
4 bought · 7 sold
1 new · 1 sold out
Tracked capital in this stock
Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).
Aggregate buying and selling
Net share change reported each quarter
Who owns ACGL?
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Who owns ACGL? — Q2 2026
Holders ranked by position size, with each one's quarter-over-quarter change.
Column filters
| # | Manager | Fund | Shares | Value ↓ | % of their portfolio | QoQ | Δ shares | Δ shares % | Est. Δ value ⓘChange in shares × this quarter's price |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ron Baron | Baron Capital (BAMCO) | 15.87M | $1.54B | 2.3% | Reduced | -837.3K | -5.0% | -$81.27M |
| 2 | Norges Bank | Norges Bank Investment Management | 4.68M | $453.83M | 0.0% | — | — | — | — |
| 3 | Boston Partners | Boston Partners Global Investors | 2.16M | $209.34M | 0.2% | Added | +63.7K | +3.0% | +$6.19M |
| 4 | Charles Brandes | Brandes Investment Partners | 1.52M | $147.36M | 1.0% | Reduced | -254.2K | -14.3% | -$24.67M |
| 5 | Two Sigma | Two Sigma Investments | 787.21K | $76.41M | 0.1% | Reduced | -486.5K | -38.2% | -$47.22M |
| 6 | Israel Englander | Millennium Management | 305.90K | $29.69M | 0.0% | Reduced | -124.7K | -29.0% | -$12.11M |
| 7 | Ken Griffin | Citadel Advisors | 272.26K | $26.43M | 0.0% | Added | +173.1K | +174.6% | +$16.80M |
| 8 | Ray Dalio | Bridgewater Associates | 223.86K | $21.73M | 0.1% | Reduced | -22.3K | -9.1% | -$2.17M |
| 9 | Jeremy Grantham | GMO | 156.24K | $15.16M | 0.0% | Added | +39.9K | +34.3% | +$3.87M |
| 10 | David Shaw | D.E. Shaw & Co. | 62.85K | $6.10M | 0.0% | Reduced | -1.8K | -2.8% | -$176.36K |
| 11 | Bridgeway | Bridgeway Capital Management | 12.85K | $1.25M | 0.0% | Held | 0 | 0.0% | $0 |
| 12 | Ken Fisher | Fisher Asset Management | 2.20K | $213.53K | 0.0% | New | +2.2K | — | +$213.53K |
Column filters
| Manager | Fund | Shares sold | Value last quarter ↑ |
|---|---|---|---|
| John Armitage | Egerton Capital (UK) | -1.1M | $107.21M |
Politician trades
Column filters
| Politician | Date | Ticker | Asset | Type | Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. | Est. size ⓘOur estimate only: the midpoint of the reported range. | Owner | Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. | Filed ↓ | Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ro Khanna Politician | Jun 2, 2026 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Jul 6, 2026 | 34 days | PTR ↗ |
| Ro Khanna Politician | May 1, 2026 | ACGL | ARCH CAPITAL GROUP LTD.CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Jun 9, 2026 | 39 days | PTR ↗ |
| Ro Khanna Politician | Jan 23, 2026 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | — | — | Child | — | Feb 6, 2026 | 14 days | PTR ↗ |
| Ro Khanna Politician | Jan 29, 2026 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Feb 6, 2026 | 8 days | PTR ↗ |
| Ro Khanna Politician | Nov 3, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Child | — | Dec 8, 2025 | 35 days | PTR ↗ |
| Ro Khanna Politician | Sep 29, 2025 | ACGL | CMN ARCH CAPITAL GROUP LTD scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Oct 3, 2025 | 4 days | PTR ↗ |
| Ro Khanna Politician | Aug 4, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMIN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Spouse | — | Sep 9, 2025 | 36 days | PTR ↗ |
| Ro Khanna Politician | Jul 25, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Aug 7, 2025 | 13 days | PTR ↗ |
| Jefferson Shreve Politician | May 12, 2025 | ACGL | Arch Capital Group Ltd. - Common Stock (ACGL) [ST] | Sale | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Self | CRT - Standard Unit Trust | Jun 22, 2025 | 41 days | PTR ↗ |
| Robert P. Bresnahan, Jr. Politician | Feb 25, 2025 | ACGL | Arch Capital Group Ltd. - Common Stock (ACGL) [ST] | Sale | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Self | JP Morgan Brokerage Account | Mar 27, 2025 | 30 days | PTR ↗ |
| Jefferson Shreve Politician | Feb 24, 2025 | ACGL | Arch Capital Group Ltd. - Common Stock (ACGL) [ST] | Purchase | $15,001 - $50,000 | Est. $32,500 (midpoint of reported range $15,001–$50,000) | Self | CRT - Standard Unit Trust | Mar 9, 2025 | 13 days | PTR ↗ |
| Ro Khanna Politician | Feb 25, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 9 days | PTR ↗ |
| Ro Khanna Politician | Feb 19, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Mar 6, 2025 | 15 days | PTR ↗ |
| Ro Khanna Politician | Jan 22, 2025 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Feb 6, 2025 | 15 days | PTR ↗ |
| Ro Khanna Politician | Dec 16, 2024 | ACGL | ARCH CAPITAL GROUP CMN LTD scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Jan 8, 2025 | 23 days | PTR ↗ |
| Ro Khanna Politician | Oct 14, 2024 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | Child | — | Nov 8, 2024 | 25 days | PTR ↗ |
| Ro Khanna Politician | Aug 5, 2024 | ACGL | ARCH CAPITAL GROUP LTD, CMN scanned | Sale (partial) | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Sep 6, 2024 | 32 days | PTR ↗ |
| Ro Khanna Politician | Jul 2, 2024 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Aug 7, 2024 | 36 days | PTR ↗ |
| Ro Khanna Politician | Jan 10, 2024 | ACGL | ARCH CAPITAL GROUP LTD. CMN scanned | Purchase | $1,001 - $15,000 | Est. $8,000 (midpoint of reported range $1,001–$15,000) | — | — | Feb 5, 2024 | 26 days | PTR ↗ |